plant structure and functions

Question 1

photosynthesis definition

Answer 1

green plants and some other organisms use sunlight to synthesize nutrients from carbon dioxide and water

Question 2

photosynthesis equation

Answer 2

carbon dioxide + water –> glucose + oxygen

Question 3

where does photosynthesis occour?

Answer 3

chloroplasts

Question 4

what kind of reaction is photosynthesis?

Answer 4

endothermic

energy is taken in during the reaction

Question 5

what affects the rate of photosynthesis?

Answer 5

light intensity

concentration of CO2

temperature

Question 6

experiment for rate of photosynthesis by light intensity

Answer 6

Canadian pondweed

Question 7

how does pondweed show rate of photosynthesis?

Answer 7

the rate it produces oxygen corresponds to the rate it is photosynthesising

Question 8

photosynthesis light intensity experiment instructions

Question 9

what are the two types of transport vessels in a plant?

Answer 9

xylem

phloem

Question 10

what is a transport vessel?

Answer 10

transport water and sugars from one part of the plant to another

Question 11

what do phloem tubes transport?

Answer 11

food substances

sucrose
(for immediate use or storage)

Question 12

phloem structure

Answer 12

elongated living cells

small pores

end walls

Question 13

what is the process of transporting sucrose in the phloem called?

Answer 13

translocation

Question 14

what does translocation require?

Answer 14

energy

Question 15

which direction does translocation go?

Answer 15

both directions

Question 16

what do xyem transport do?

Answer 16

transports water and mineral ions up and out of the leaves

Question 17

xylem tube structure

Answer 17

dead cells joined end to end

no end walls

hole down the middle

Question 18

what strengthens the xylem?

Answer 18

lignin

Question 19

what is transpiration?

Answer 19

the loss of water from the plant

Question 20

what causes transpiration?

Answer 20

evaporation AND diffusion

from a plant surface

Question 21

where does transpiration happen?

Answer 21

at the leaves

Question 22

what happens to mineral ions in xylem?

Answer 22

transpiration steam carries them and then they dissolve in the water

Question 23

what are stomata needed for?

Answer 23

gas exchange

Question 24

what are stomata?

Answer 24

tiny pores in plant tissue

Question 25

what are stomata surrounded by?

Answer 25

guard cells

Question 26

what do guard cells do?

Answer 26

change shape to control the size of the pore

Question 27

turgid meaning

Answer 27

swollen with water

Question 28

what happens when guard cells are turgid?

Answer 28

the stomata are open

Question 29

what does flaccid mean?

Answer 29

low on water

Question 30

what happens when guard cells are flaccid?

Answer 30

the stomata are closed

Question 31

what environmental factors affect transpiration rate?

Answer 31

light intensity

temperature

airflow

Question 32

how does light intensity affect transpiration?

Answer 32

the brighter it is the higher the transpiration rate

stomata close when it gets dark

Question 33

how does temperature affect transpiration?

Answer 33

the warmer it is the faster the transpiration rate

Question 34

how does airflow affect transpiration?

Answer 34

the better the airflow (stronger wind) the greater the transpiration rate

Question 35

what can you use to measure transpiration rate?

Answer 35

potometer